单片机应用系统设计中的看门狗技术探究

Study on the Watchdog Technology in Reliability Designing in Single Chip Application System

针对单片机应用系统可能出现的受干扰而发生程序陷于死循环的现象,探讨了对其进行监视的方法,提出了用硬件看门狗对其监控的措施。同时,介绍了一种具有看门狗与电源检测功能的高可靠性监控电路MAX815,并详述了其在单片机系统中的应用。

With considering unable-ending cycle in the process of practical use of single chip microcomputer system, the ways of avoiding programs are discussed in single chip microcomputer going into unable-ending cycle by using hardware watchdog technology when single-chip-microcomputer system is disturbed. The high and dependable electric circuit MAX815 is introduced for the microprocessor with supervising and controlling for at the same time having the watchdog and detect power function, and its application in the single chip microcomputer system is expounded detailedly.